26 inch ECP in a 68 Dart

ECP is a brand new radiator going in a 1968 Dodge Dart that was a six-cylinder converting to 8 putting in a small block 360 proximally 420 horse originally rated at 390 Mopar performance 360 what other information would you need

As long as the in's/out's and measurements clear your car none I guess. :D

Customer reviews are split about 60/40 (Good/bad) from what I can find.